Method of making channel ribbon.



'J. D. WILSON. I mmnon or MAKING 0 Y APPLIOATIOH 11.21: 00m. 21, 1909;

I l E METHOD OF MAKING CHANNEL RIBBON.

Specification of Letters Patent.

Application filed October 21, 1909.

Patented Got. 18, 1910.

Serial No. 523,798.

To all whom it may concern:

Be it known that I, JAMES D. VVILsoN, a resident of Baltimore, State ofMaryland, have invented certain new and useful Improvements in theMethod of Making Channel Ribbon; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it pertains to make anduse the same.

This invention relates to a method of making channel-ribbon direct fromwire, and the object of the invention is to provide for making suchribbon direct from the wire preferably at a single operation.

The invention consists in the improved method hereinafterdescribed andparticularly pointed out.

In the accompanying drawing which illustrates the invention and formspart of the specification, Figure 1 is a side view of a pair of dierolls adapted to carry out the method; Figs. 2 and 3are side views ofthe same differently adjusted; Fig. 4 shows die rolls of different shapefor the same purpose; Figs. 5, 6 and 7 show different adjustments of therolls of Fig. 4; Fig. 8 shows on an enlarged scale the several forms orcross section of ribbons produced by the rolls of Fig. 1 by their threeadjustments; Fig. 9 shows the forms of ribbon made by the rolls of Fig.4 by the three adjustments thereof; Fig. 10 shows the forms of ribbonmade by rolls like those of Fig. 4 but reversed as to angles of sides ofthe die rib and groove.

The present improvement is primarily intended to facilitate themanufacture of substantially V-shape ribbon direct from solder wire forhemming caps for tin cans, but is applicable also to other uses, and t9modified forms of channel ribbon.

Prior to this invention channel ribbon has been made from wire by firstrolling it into form of a flat ribbon by suitable means, and then byforming devices bending the flat ribbon into channel form. Such oldmethod was faulty because it required a plurality of been necessary totrim the edges. I overcome all these objections.

In the drawing numeral 1 denotes a male die roll, 2 a female die roll,and 3 shafts therefor, which may be mounted and driven in any suitablemanner.

Numeral 4 denotes a male-die-annularrib, and 5 a correspondingwire-forming and centering groove of the other die roll.

In Fig. 1 the center lines of the dies 1 and 2 are in the same plane.When the rolls are rotated and a wire, for example a solder wire ofsuitable size, and of round or other cross section, and at normalteniperature, is introduced between the rolls, the wire is guided andcentered by the groove 5, and the die rib 4 partly cuts or separates themetal of the wire longitudinally, and the rolls form such metal into theopposite sides 6, 7, constituting the channel ribbon. The rolls beingarranged as shown will form the edges of the sides perfectly straighteven when the wire has bends in it, and no trimming is needed.

The dies being symmetrically arranged the opposite sides or flanges ofthe ribbon will be of the same width and thickness, as shown at a inFig. 8.

In Fig. 2 the center line of roll 1 is in a plane at the left of thelike plane of roll 2. And in Fig. 3 the center line of roll 1 is in aplane to the right of the like plane of roll 2. The correspondingribbons produced are shaped as at b and c Fig. 8, respectively, that is,in the first case the right hand side of the channel ribbon is thickerthan the left hand side; and in the second case it is vice versa. Therolls are set or adjusted in accordance with the character or form ofribbon wanted.

It is sometimes desirable to form the oppo' site sides or flanges of theribbon of unequal width. This requires a modification of the annulargroove and die ring of the rolls.

In Fig. 4 the left side of the groove 5 and of the die 4 are shownshorter, and at a sharper angl e, than the right sides, and this resultsin producing a ribbon having substantially the form shown in Fig. 9 at(Z, and by displacing the rolls slightly in relation to each other tothe right or to the left ribbons will be made as at 6, with one sidecomparatively narrow and thin, and the other side wide and thick, andvice versa, as at f.

g, h, 2', Fig. 10, show a mere reversal as to sides of the forms (Z, 6,f, which require rolls like those of Fig. 4 except that the angles ofthe sides of groove and rib would be reversed.

Fig. 7 shows the wire to be made into ribbon centered in the groove, theupper roll not yet being close enough to form the ribbon.

Though it is preferred to employ a single pair of die rolls only incarrying out my method, the employment of a preliminary pair of suchrolls to partially slit the wire in advance of the final slitting andforming thereof would be within the scope of my invention.

The invention is not limited to special apparatus except as pointed outin the claims, nor is it limited to.the production of channel ribbon ofthe particular shapes and proportions illustrated and described.

Having thus described the invention what I claim is,-

1. The improved method of forming channel ribbon from wire whichconsists in partly cutting the metal longitudinally of the wire andreducing and forming the wire into the desired channel shape by a singlepair of die rolls at one operation.

2. The improved method of forming channel ribbon from wire whichconsists in longitudinally slitting such wire and forming it into thedesired channel shape with straight edges by a single pair of die rollswhich act on the broad sides only of the ribbon, and at one operation.

3. The improved method of directly forming channel ribbon from wirewhich consists in longitudinally partly dividing such wire so that theamount of material will be greater on one side than on the other, andforming it into the desired channel shape with straight edges by asingle pair of rolls, and at one operation.

i. The method of forming channel ribbon direct from wire which consistsin centering a wire in and by a forming groove of a rotary roll, partlysplitting said wire by a cutting die-rib of a cooperating rotary roll,and directly reducing and forming the divided portions of the metal ofthe wire to the channel form.

5. The method of forming channel ribbon with straight edges direct fromwire at a single operation which consists in centering a wire in and bya forming groove of one rotary roll of a pair, partly splitting saidWire by a cutting die-rib of the cooperating rotary roll of said pair,and directly reducing and forming the divided portions of the metal ofthe wire to the channel form.

6. The method of forming channel ribbon direct from wire which consistsin centering a wire in and by a forming groove of a retary roll, partlysplitting said wire by a sharp cutting die-rib of a cooperating rotarydie-roll, and directly reducing and forming the divided portions of themetal of the wire to the channel form by rolling the two larger facesand not the edges.

7. The method of forming channel ribbon direct from wire which consistsin centering a wire in and by a forming groove of a retary roll, partlysplitting said wire along any desired dividing line thereof, whereby therelative amount of material in the sides will be determined, by acutting die rib of a cooperating rotary roll, and directly reducing andforming the divided portions to the channel form.

8. The method of forming channel ribbon having a predetermined amount ofmetal per unit of length direct from wire which consists in centering awire having a greater amount of material per unit of length in and by aforming groove of a rotary roll, partly splitting the wire along thedesired dividing line thereof, whereby the relative amount of materialin the sides will be determined, by a cutting die rib of a cooperatingrotary roll, and directly reducing and forming the divided portions tothe channel form having said predetermined amount of material per unitof length.

9. The method of forming channel ribbon with straight unrolled edges andhaving a predetermined amount of metal per unit of length direct fromwire which consists in centering a wire having a greater cross sectionthan the desired ribbon inand by a forming groove of a rotary roll,partly splitting said wire along the desired dividing line, whereby theamount of metal in the sides will be determined, by a cutting die rib ofa cooperating rotary roll, and directly reducing and forming the splitwire to the channel form of selected cross section.

In testimony whereof, I have signed this specification in the presenceof two subscribing witnesses.

JAMES DANIEL WILSON. lVitnesses:

SAMUEL J. FISHER, ALLAN HERBERT FIsrmR.

